raul castro is now president and trying to seek out investment from china, india and brazil. but structurally not much has changed in cuba since 1991. the island nation is still run on socialist principles that have produced shortages, black markets and mass poverty. imagine what happens to cuba without venezuela's support and imagine what happens in venezuela if its people begin asking questions about why they suffer one of the world's highest rates of inflation, a contracting economy, one of the worst crime rates despite having more oil than any other nation in the world. one day these two countries will look around, see that latin america is leaving them behind and face the future: remember these scenes of the two amigos. they might turn out to represent the last hurrah of a dieing world. and we'll be right back. >>> i've known to a greater or lesser degree i think seven presidents. and i don't think i could sleep at night if i knew what they know and had all of that on my shoulders. it's different. we have access to great specialists, and our pediatrician gets all the inf